Warp beam for looms



y 29, 1951 c. P. BERGSTROM 2,554,891

WARP BEAM FOR LOOMS Filed Aug. 25, 1950 46 3 F l SJ 4 Hl l\ :1 2G

INVENTOR' CARL P.- BERGSTROM ATTORNEY Patented May 29, 1 551 UNITED STATES PATENT F F l CE WARP BEAM FGR BOOM-S Garl Pz. Berg strom, Millbur-y, Mass, assignor to Crompton & Knowles Loom Works,. Worcester, Mass, a, corporation of Massachusetts Application- August; 25, 1950; Serial No.. 1815535 10 Claims. (01.242424) This invention relates to improvements inwarp beams. for looms and. ity is the general object of the invention to provide a beam: barrel formed with internal radial webs having. driving engage.- ment with lugs or the like on heads secured to the. ends of the barrel.

A warp beam generally comprises an elongated cylindrical barrel having; at the ends thereof supporting gudgeons for mounting the beam in a winding machine and also in a loom. These gudgeons are supported by heads secured to the ends of. the barrel preferably in such manner. that theheads and gudgeons'turn with the barrel but can be removed from it for repair or renewal.

It is an important object'of thepresent. invention to provide a beam barrel with webs. running lengthwise thereof and fitting'into slots between driving lugs or the like formed on: the heads. Tie rods extending through the barrelhold the heads to the ends of the barrel with thewebs fitting into the. slots.

It is afurther object of theinventionto provide a beam barrel having lengthwise integral webs engaging head carriedlugs or the like.- which ex tend in the direction of the'length of the barrel so that the heads when moved endwise ofthe barrel can establish driving connection between the webs and lugs.

With these and other objectsin viewwhich will appear as the description proceeds, the inventionresides in the combination and arrangement of parts hereafter described and setforth.

In the accompanying drawings,-

Fig. 1 is an elevation of awarp bearrrmade according to the present invention and showing one form of head at the-righthandend-and another form of head at-theleft hand end thereof;- Figs. 2 and 3 are enlargedverticalisectionson line 2-2 and 33, respectively, of Fig. 1,

Fig. 4 is, an enlarged longitudinal section of 1ine 44, Fig. 2,

Fig, 5 is'a transverse section-on line 5.-5,.Eig;.4e

Fig. 6 is a perspective; view of onepair'of. lugs on the'form of headshown for instance in Fig; an

Fig. '7 is a view similarit'o' Fig. 4-butshowing; the other form of head at the left hand end of the beam as viewed in Fig 1.

Referring to the drawings,,barrel I :on which the warp (not shown) is .wound. comprises; an, outer shell 2 formed as a cylinder. andconnectedabyrradialwebs 3 to an inner: core: or 11113814 having a bore 5; Theshell Zr and: tube? 4'. are; preferably concentricand arelinteg ralwith the-webs .3.., The barrel. may'be formedlas. an extrusion and; al.- though three webs are shown in. Fig. 3 the in- 2. vention is not limitedto a barrel having this number-ofiwebs.

The head H shown at the right hand end of Figr is. formed with a flange I I] having integral therewith. an outwardly extending hub I I formed with a bore I2 preferably of the same diameter as the bore 5. The flange IE1 has a rim 13 which abutsthe adjacent end of shell 2, see Fig. 4. Extending. inwardly from the flange I0 is a second hub or collar I5 integral with the flange and teleseoped. or fitted intothe shell 2.

The collar I5. in the present instance is made in. three arcuate parts I6 extending circumferentially around the axis of the barrel. Adjacent. ends of the parts I6 are formed with lugs I'I separated by radial web receiving slots I8 which are of a width substantially the same as the thickness of thewebs 3. Each slot is formed by a pair of. lugs I1, and the latter are located on opposite sides. of the associated web. Where the webs join the shellZ, see Fig. 5, they are formed with fillets I9, and in order to accommodate the fillets thelugs I1 are beveled as at 20. It is to be understoodthat the collar will have a slot I8 for at least one. of the webs 3 and preferably for all of the webs.

The parts I B of collar I5 may if desired be formed with cylindrical surface 25 concentric with the barreland fitting closely into the adjacent end of the shell2' between the webs 3. The surfaces 25' serve to center the head H with respect to the. barrel. When thus centered the bores 5 and" I2'are', in alignment to receive a gudgeon 26 which is. preferably driven into the hub II and extends into the bore 5, as shownin Fig. 4. v The headI-II at the left hand end of Fig. 1 and shown more particularly in Fig. 7 is similar to head H except that it has provision for receiving a friction strap or the like (not shown) forming some part of' the letofi mechanism for a loom. The head HI has a flange 30 formed integrally with-adrum 3! around a part of which at least a friction strap. canv be wrapped when the warp beam isin a loom. The head HI has an outwardly extendinghub 32'similar to hub I I and an inwardly extending hub or collar 33 similar to hub or collar I5. A second gudgeon 34 similar to gudgeon26 may be driven into hub 32 and extend into the bore 5 in a manner similar to that already described in connection with Fig. 4.

Two tie rods 35and 36 are provided to serve as retaining or holding means to hold the heads H and HI to their respective ends of the barrel. ;Il hese.tie-.-rods extend through the flanges I0 and Sibandhavetheir ends screw-threaded to receive nuts 31 which when tightened hold the heads H 3 and HI firmly to the ends of the barrel with the ends of the webs 3 in the slots 18 between the pairs of lugs. These tie rods extend through the barrel parallel to but spaced from the webs 3. If desired, more than the two tie rods shown in Figs. 2 to 5 may be employed.

As shown in Fig. 5 the three webs are equiangularly spaced around the axis of the barrel and by their entry into the radial slots 18 serve to center the head with respect to the axis of the barrel. It is for this reason that the collar I5 may if desired be made without the cylindrical surfaces 25. It is preferred, however, to use the cylindrical surface 25 to insure true centering of the heads with respect to the barrels so that the gudgeons may properly fit into bore 5.

It will be understood that the lugs I! of each pair of lugs have lateral engagement with the opposite sides of the corresponding web 3, and all the lugs extend in the direction of the length of the barrel 1 so that the webs 3 will fit into the slots i8 when the head is moved endwise toward the barrel. The webs and lugs cooperate to require the head and barrel to turn in unison and prevent relative angular movement between them.

If desired the head H may be provided with lugs 40 extending outwardly from the web II] for cooperation with a letofi mechanism designated generally at L and indicated by dot and dash lines in Fig. 1. This letoff mechanism may for instance be similar to that shown in Payne Patent No. 1,803,143. The external surface of the barrel I may be provided with screw threads 45 to receive warp flange 46 between which the warp threads are wound.

From the foregoing it will be seen that the invention sets forth a simple warp beam the barrel of which is provided with longitudinally extending and preferably radial webs 3 which fit into slots l8 between driving lugs I! on heads held to the end of the barrel by tie rods. The lugs extend along and preferably on opposite sides of the webs and with the latter establish driving connections between the heads and the barrel. The lugs fit around and slide along the webs when the heads are moved toward their respective ends of the barrel. The barrel is preferably although not necessarily made as an extrusion and the webs 3 are preferably spaced equiangularly around the axis of the barrel. While it is preferably to have a pair of lugs for each web 3 it will be understood that a single pair of lugs in engagement with one of the webs will be sufficient to establish driving connection. When onl a single pair of lugs is used it is desirable to have the cylindrical surfaces 25 on the head, but this surface may be omitted if there is a pair of lugs for each web and reliance is placed on the close fit between the webs and their pairs of lugs to center the head. If only two slots it are used they will nevertheless center the head on the barrel due to the fact that. the webs entering the slots lie in oblique planes. When it is desired to remove the head the tie rods can be loosened and the lugs will slide off the webs as the head is moved endwise away from the barrel.

Having thus described the invention it will be seen that changes and modifications of the foregoing specific disclosure may be made without departing from the spirit and scope of the invention.

What is claimed as new is:

1. In a warp beam, a barrel comprising an outer cylindrical shell and an inner tubular core concentric with the shell and a radial web extending lengthwise of the barrel connecting said shell and core, a head at one end of the barrel having parts thereof extending in the direction of the axis of the barrel along opposite sides of said web to cause angular movement of the barrel when the head is turned."

2. In a Warp beam, a barrel comprising an outer cylindrical shell and an inner tubular core concentric with the shell and a radial web extending lengthwise of the barrel connecting said shell and core, a head at one end of the barrel, a pair of spaced lugs on the head extending along opposite sides of the web in the direction of the length of the barrel, and retaining means holding the head on the barrel and maintaining the lugs on said opposite sides of the web.

3. In a warp beam, a barrel comprising an outer cylindrical shell and an inner tubular core concentric with the shell and a radial Web extending lengthwise of the barrel connecting said shell and core, ahead at one end of the barrel, a pair of lugs on the head spaced by a radial slot into which the web extends, and retaining means holding the head on the barrel and maintaining the lugs on said opposite sides of the web with the latter in said slot.

4. In a warp beam, a barrel comprising an outer cylindrical shell and an inner tubular core concentric with the shell and a plurality of radial webs extending lengthwise of the barrel connect ing said shell and core, a head on one end of the barrel formed with radial slots to receive said webs, and means holding the head on the barrel with the webs extending into said slots.

5. In a warp beam, a barrel comprising an outer cylindrical shell and an inner tubular core concentric with the shell and a plurality of radial webs extending lengthwise of the barrel connecting said shell and core, a head on one end of the barrel having lugs to extend along said webs in the direction of the length of the barrel, and means holding the head on the barrel with the lugs in position for engagement with said webs to prevent angular movement of the head relative to the barrel around the axis of the barrel.

6. In a warp beam, a barrel comprising an outer cylindrical shell and a inner tubular core concentric with the shell and a plurality of radial webs extending lengthwise of the barrel connecting said shell and core, a head on one end of the barrel having a pair of lugs for each web, the lugs of each pair extending along opposite sides of the corresponding web in the direction of the length of the barrel, and means holding the head on the barrel with each web extending between the lugs of the corresponding pair of lugs.

7. In a warp beam, a barrel comprising an outer cylindrical shell and an inner tubular core concentric with the shell and at least two radial webs lying in oblique planes extending lengthwise of the barrel and connecting the shell and core, and a head held on one end of the barrel having a pair of spaced lugs thereon for each web, the lugs of each pair being separated by a radial slot into which the corresponding web extends, said lugs and webs cooperating to prevent movement of the head transversely and angularly with respect to the barrel.

8. In a warp beam, a barrel comprising an outer cylindrical shell and an inner tubular core concentric with the shell, a plurality of at least 18 three radial webs extending lengthwise of the barrel and equiangularly spaced around the axis of the barrel, and a head held to one end of the barrel having a pair of lugs for each web, the lugs of each pair extending in the direction of the length of the barrel along opposite sides of the associated web, said webs and pairs of lugs cooperating to prevent transverse and angular movement of the head relative to the barrel.

9. In a warp beam, a barrel comprising an outer cylindrical shell and an inner tubular core concentric with the shell and a plurality of radial webs extending lengthwise of the barrel connecting said shell and core, a head on one end of the barrel formed with radial slots to receive said webs, the head when moved toward the adjacent end of the barrel along the axis of the latter with the webs aligned with the slots causing the webs to enter the slots, and means holding the head on the barrel with the webs entering into said slots.

10. In a warp beam, a barrel comprising an outer cylindrical shell and an inner tubular core REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,146,551 Clabby et al July 13, 1915 20 1,475,209 Tuttle Nov. 27, 1923 2,397,362 Markle Mar. 26, 1946 2,487,726 Powell Nov. 8, 1949 

